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Yamaha Bws YW125 User Manual

Yamaha Bws YW125
80 pages
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1CE-F819D-E0
YW125
OWNER’S MANUAL
Read this manual carefully before operating this vehicle.
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Table of Contents

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Yamaha Bws YW125 Specifications

General IconGeneral
Displacement125cc
Fuel SystemFuel Injection
Front SuspensionTelescopic fork
Rear SuspensionUnit Swing
Rear BrakeDrum
Front Tire120/70-12
Rear Tire130/70-12
Bore x Stroke52.4 mm x 57.9 mm
Starting SystemElectric
Front BrakeSingle disc

Summary

Safety Information

Be a Responsible Owner

Owner's responsibilities for safe operation, including training and following manual instructions.

Safe Riding Practices

Performing pre-operation checks, being visible, and knowing skills and limits.

Protective Apparel

Importance of helmets, face shields, jackets, trousers, and gloves for injury prevention.

Carbon Monoxide Hazards

Dangers of carbon monoxide from engine exhaust and necessary precautions.

Loading Guidelines

Safe practices for adding cargo or accessories, weight distribution, and limits.

Aftermarket Parts and Modifications

Risks of non-genuine parts and modifications affecting safety and performance.

Further Safe Riding Tips

Advice on signaling, braking on wet surfaces, cornering, and road hazards.

Description

Left Side View

Identification of major components located on the left side of the scooter.

Right Side View

Identification of major components located on the right side of the scooter.

Controls and Instruments

Location and basic function of all controls and instruments on the scooter.

Instrument and Control Functions

Main Switch and Steering Lock

Controls ignition, lighting, and steering lock functions.

Keyhole Cover

Instructions on how to open and close the keyhole cover.

Indicator Lights

Explains the meaning and function of dashboard indicator lights.

Speedometer Unit

Details the speedometer and odometer for tracking speed and distance.

Fuel Gauge

Indicates the current fuel level in the tank.

Handlebar Switches

Operation of switches for lights, signals, horn, engine stop, and start.

Brake Levers

Location and operation of front and rear brake levers.

Fuel Tank Cap

Procedure for opening and closing the fuel tank cap.

Fueling Precautions

Safety guidelines for refueling, including fire hazards and fuel type.

Catalytic Converter

Information on the catalytic converter and precautions for hot exhaust.

Seat

How to open and close the seat for access.

Helmet Holder

Location and use of the helmet holder under the seat.

Storage Compartment

Location and load limits for the under-seat storage.

Luggage Hook

Location and load limit for the luggage hook.

Sidestand Safety System

Operation of the sidestand and its relation to the ignition circuit cut-off system.

Ignition Circuit Cut-off System

How the system prevents starting or stops the engine based on sidestand/brake status.

Operation and Important Riding Points

Starting the Engine

Step-by-step guide for starting the engine, including safety checks.

Starting Off

Procedure for moving the scooter from a standstill and beginning to ride.

Speed Adjustment

How to control speed by operating the throttle grip.

Braking

Techniques for safe and effective braking, including warnings for wet conditions.

Fuel Consumption Tips

Advice to improve fuel efficiency based on riding style.

Engine Break-in

Recommended procedures for the initial 1000 km of operation for engine longevity.

Parking

Safe practices for stopping the engine and parking the scooter.

Periodic Maintenance and Adjustment

Owner's Tool Kit

Location and contents of the tool kit for basic maintenance.

Removing and Installing Panels

Instructions for accessing components by removing body panels.

Spark Plug Inspection

How to check the spark plug for condition and adjust its gap.

Engine Oil Maintenance

Procedures for checking oil level and changing engine oil.

Final Transmission Oil Service

Procedures for checking and changing the final transmission oil.

Air Filter Maintenance

How to inspect, clean, or replace air filter elements.

Engine Idling Speed Check

How to check and ensure correct engine idling speed.

Throttle Cable Adjustment

Procedure for checking and adjusting throttle cable free play.

Valve Clearance

Importance of valve clearance and dealer adjustment intervals.

Tire Inspection and Pressure

Checking tire condition, tread depth, and adjusting air pressure.

Cast Wheel Maintenance

Precautions for checking cast wheels for damage and balancing.

Brake Lever Free Play

Checking and adjusting free play for front and rear brake levers.

Brake Pad and Shoe Wear

How to check front brake pads and rear brake shoes for wear.

Brake Fluid Level Check

Procedure for checking brake fluid level and refill precautions.

Control Cable Maintenance

Inspecting and lubricating all control cables for smooth operation.

Throttle Grip and Cable Lubrication

Lubricating the throttle grip and cable for optimal performance.

Brake Lever Lubrication

Lubricating the pivot points of the front and rear brake levers.

Centerstand/Sidestand Maintenance

Checking and lubricating the centerstand and sidestand.

Front Fork Inspection

Checking the condition and smooth operation of the front fork.

Steering System Check

Checking for play in the steering bearings.

Wheel Bearing Check

Checking front and rear wheel bearings for play or smooth rotation.

Battery Care

Information on the VRLA battery, its charging, and maintenance.

Fuse Replacement

Procedure for replacing blown fuses in the electrical system.

Headlight Bulb Replacement

Guidance on replacing a burnt-out headlight bulb.

Turn Signal Bulb Replacement

Procedure for replacing turn signal light bulbs.

Troubleshooting

General approach to diagnosing and resolving common scooter problems.

Troubleshooting Chart

A diagnostic chart for fuel, compression, ignition, and battery issues.

Scooter Care and Storage

Matte Color Cautions

Specific cleaning advice for matte finished parts to avoid damage.

General Scooter Care

Guidelines for cleaning, washing, and protecting the scooter from corrosion.

Scooter Storage

Procedures for short-term and long-term storage to maintain the scooter.

Specifications

Dimensions and Weight

Key physical dimensions and weight of the scooter.

Engine and Fuel Specifications

Details on engine type, displacement, oil, and fuel requirements.

Chassis and Wheels

Specifications for the chassis, tires, and wheels.

Brake and Suspension Systems

Information on the front/rear brakes, and suspension types.

Electrical System Details

Specifications for ignition, charging, and battery systems.

Light Bulb Specifications

Wattage, voltage, and quantity for all lights.

Fuse Specifications

Amperage ratings for various fuses in the scooter's electrical system.

Consumer Information

Vehicle Identification Numbers

Location for recording VIN and model label for parts ordering and registration.

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